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The nohup command in AIX has the
ability to “nohup” an existing process and protect if from hangup signals. Using the -p flag, an existing, running process can be “nohup’ed” and told to ignore SIGHUPs. "Why is this useful?" I hear you ask. Well, I'll often start a "long running" process
on a system at work, like a backup for instance. I'll sometimes forget to use the nohup command, so that my long running job will ignore any SIGHUPs and continue
running, say for example if my ssh session to the server dies. The nohup... [More]